1. Bae, M. H., Bae, T. Y., Cho, Y. S., Son, H. Y. and Kim, D. J., “The Stress Analysis of Planetary Gear System of Mixer Reducer for Concrete Mixer Truck”, Journal of Drive and Control, Vol. 12, No. 4, pp. 77-81, 2015.
2. Coy, J. J., D. P. Townsend, and E. V. Zaretsky, "Dynamic Capacity and Surface Fatigue Life for Spur and Helical Gears", ASME Paper No. 75-Lub-19, pp. 56-73, 1975.
3. Dudley, D. W., The Handbook of Practical Gear Design, 2nd Edition, Mcgraw-Hill, San Diego, 1984.
4. Lewis, W., "Investigation of Strength of Gear Teeth", Proc. Eng. Club, Philadelphia, pp. 38-55 1893.
5. F.E.M 1.001 3rd edition : Section I, Heavy Lifting Appliances.